Perhaps you should try some spelling variations:
making using » making use
wang making » ang making, hoang making, change making
firing cost » firing costs, living costs
fund risk » bond risk, funding risk
ai costa » can costa, _ costa, da costa
au costa » can costa, _ costa, da costa
how shih » how six, how she

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang making using ((ai costa) OR (au costa)) ((firing cost) OR (fund risk)) how shih ;~.
• Adding a wildcard symbol may retrieve word variants: wang making using ((ai costa) or (au costa)) ((firing cost) or (fund risk)) how shih ;*.